Improvement in burrs for knitting-machines



- UNITED STATES PATENT OFFICE.

LUKE KAvA'uAuGH, OF WATERFORD, NEW YORK, ASSIGNOR ro HIMSELF AND GAGE, CAMPBELL & GAGE, OF sAME PLACE.

IMPROVEMENTAIN BURRS FORKNITTI'NG-MACHINES.

S ecification forming part of Letters Pa tent No. 35,565, dated J one 10, 1869.

' .To all whom, it may concern.

Be it known that I, LUKE KAVANAUGH, of

the village ofWaterford, in the county of Saratoga and State of New York, have invented a new and useful Improvement in Burrs for,

Knitting-Machines; and I do hereby declare that the following isa full and exact description of iii y said in vent i'o n, reference being hadto the annexed drawings, in which- ,-Fig. 2 an edgeview, @lane of the axis, of u'r re nbodying my Figure 1 is an end view and Fig. 3 a section ini ayarn-sinking knittin invention; Fig. 4 anend view, and Fig. 5 a

side view, of the hub of thelgiiittii'ig-burr shown in Figs.- 1, 2, aud t), aiid Fig.-- 6. a side View, and Fig. 7 an edge view, of one of the wings or blades of the same burr. Figs. 8, 9, aud 10 are end views, and Figs. 11,12, and 13 side or edge views, partly in section, of the parts by which the wings are secured in the slotted hub of the burr shown byfF 'gs; 1, 2, and 3. Fig. 14 is an end view, and Fig. 15 aside view,

of a'hub like that shown byFigs. 4 and 5, but with a less iiumberof oblique radial slots arouudits circumference. Fig-:ldis asection in the plane of the axis, and, Fig. '17 a side view, of one of the wings or. blades of a castingoff burr in which in illVGniiOlliS embodied.

The same letters of reference indicate like parts in all the figures.

The distinguishing feature of my said improvement in knitting-burrs is the holding of the series of separable wings A fast in the oblique radial slots b in the hub C by means of two detachable rings or plates, D D, engaged with and clamped against the ends of the ob liquely-arranged wings in tlie'h'ub, so that by simply unl'astening and. disengaging one or both of the said clampir g-plates or holdingrings fronithe end or ends of the wings any one or more or all of the wings can then be freelyslid out of a the hub and a new wingor wings inserted instead,'and" so that the burr can be altered into one of a coarser gage by merely transferring to a suitable hub a sufficient number of the wings and the said endplates with their clamping devices. A

In the knitting-burr shown by Figs. 1, 2,

and 3 the clamp-plates D D have circular projections 6, Figs. 3,8, 11, 12,-9,.fitting' into'corres onding recesses, f, Figs. 3 and 6, in the en sof the wings A; and in the burr showiiin f Fig. 16 the clamp-plates have annular grooves 9, into which fit corresponding projections, h, Fig. 17, on the wings; but the clamp-plates and wings may have any other suitable construction that will make the clamp-plates engage with and securely hold the wings with their outer edges, 13, substantially in a circle couceiitric with the axis ofthe burr.

In the burr shown by Figs. 1, 2, and 3 the bushing) of the hub O is separate from thehuh,

and fast at one end to one of the clampdisks D, Figs. 3 and 11, and has on its other end a screw, k, and corresponding nut, 1, Figs. ;3, 11, 10, and 13, by which'the plates D Dare tightened'upon the ends of the wingsA, and

in the burrshown in section by Fig. '16 the bushing j may be either fast or loose in the hub 0, and is separate from the clamp-plates D D, whichare in that case clamped against the ends of the wings A by means of screws m an, passed into or through the hub between the bushing and the slots in the rim of the hub; but any otherequivalent or suitable device or devices may be employed to clamp the holding-disks D D firmly against the ends of the obliquelyai-rauged wings A in the slotted hub.

Vhatl claimas new and of iny'iinveiitionand desire to secure by Letters Patent, is-

A rotary kuittinglburr having. removable -wi ngs A, held stationary within oblique radial slots bin a hub, O, by}, means of detachable rings or disks D D, engaged with and clamped against the ends of the wings, substantially as herein set forth. i i

LUK KAVANAUGH.

witnesses: l

. GEoRGE LOWRY,

J. GRAMER, 2d. 

